TENSILE TESTS OF LARGE SPECIMENS REPRESENTING THE INTERSECTION OF A BOTTOM LONGITUDINAL WITH A TRANSVERSE BULKHEAD IN WELDED TANKERS
Investigations of three discrete designs of a bottom longitudinal connection at a bulkhead were made to furnish information on their relative mechanical behavior when loaded in tension. All specimens failed with cleavage fractures after varying amounts of plastic deformation. Generally the energy to fracture increased with test temperature. Results of the tests to failure near 0 deg F indicate that the modifications to the basic T-2 design were beneficial, increasing the capacity of the interrupted longitudinals to absorb the energy of deformation. Comparisons of maximum load, over-all elongation, and energy to fracture for the three longitudinal designs indicate that qualitatively the order of merit for this connection is (1) through longitudinal of experimental design, (2) through-bracket longitudinal of Navy oiler design and (3) modified interrupted longitudinals for T-2 tankers. Additional tests are needed to determine whether the superior performance of the through longitudinal design can be maintained when the necessary modifications for tanker service are introduced.
National Bureau of StandardsGaithersburg, MD United States
Ship Structure CommitteeNational Academy of Science, 2101 Constitution Avenue, NW
Washington, DC United States 20418
- Irwin, L K
- Campbell, W R
- Publication Date: 1954-1-18
- Features: References;
- Pagination: 68 p.
- TRT Terms: Bending moments; Failure; Hulls; Longitudinal strength; Structural analysis; Structural deterioration and defects; Structural mechanics; Tankers; Tension tests
- Identifier Terms: Ship Structure Committee
- Uncontrolled Terms: Structural failures
- Old TRIS Terms: Hull bending moments; Structural discontinuity; Tanker structural analysis; Tensile test
- Subject Areas: Marine Transportation; Materials;
- Accession Number: 00331011
- Record Type: Publication
- Source Agency: Ship Structure Committee
- Report/Paper Numbers: SSC- 68 Final Rpt.
- Files: TRIS
- Created Date: May 21 1981 12:00AM